<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://pop.h-cdn.co/assets/cm/15/05/480x552/54cac51272a00_-_hk416-03-0611-xln.jpg>
<http://www.popularmechanics.com/military/weapons/g536/face-time-with-the-hk416-the-gun-that-killed-bin-laden/>